A veterinarian analyses a piece of meat collected by Public Health Surveillance agents during an inspection of supermarkets, at a veterinary laboratory with the public health department in Rio de Janeiro, Brazil, March 20, 2017. REUTERS/Ricardo Moraes

A veterinarian analyses a piece of meat collected by Public Health Surveillance agents during an inspection of supermarkets, at a veterinary laboratory with the public health department in Rio de Janeiro, Brazil, March 20, 2017. REUTERS/Ricardo Moraes